Renesas Technology America, Inc. today announced the SH7211F single-chip microcontroller (MCU) with on-chip flash memory, which features a fast SH-2A CPU core with excellent real-time control capability, a record-setting operating speed of 160MHz, and a processing capability of up to almost 320 MIPS. The high-performance device -- an addition to the 32-bit RISC (reduced instruction set computer) SuperH(R) family -- uses proprietary flash memory and circuit technologies and also has a superscalar architecture that can simultaneously execute two instructions. It improves performance by a factor of 1.5 or more compared to previous Renesas MCUs with SH-2 CPU cores at the same frequency, or by a factor of about three when the 80MHz maximum operating frequency of SH-2 devices is considered.
"As a result of the excellent capabilities and performance of the new device, system engineers can design embedded systems that deliver more precise and faster control functions and faster software execution," said Peter Carbone, marketing director, system LSI business unit, Renesas Technology America. "A key application of the SH7211F is in industrial devices such as AC servos and general-purpose inverters that achieve enhanced operating efficiency. The MCU is also ideal for office automation and consumer products, among others."
To accommodate complex and sophisticated application programs, the chip has a large-capacity 512Kbyte flash memory. In general, the operating speed of flash memory is theoretically slower than that of the logic circuitry in the CPU core, and is difficult to increase. However, the SH7211F is built with proprietary Renesas flash memory technology and uses innovative circuit techniques for the flash-memory cache circuitry. These factors combine to allow the SH7211F to produce virtually the same performance as when single-cycle accesses are performed at 160 MHz. Also, because the SH-2A CPU core improves ROM code efficiency, program size can be reduced by about 25 percent compared with code written for chips that have the SH-2 core. (Upward instruction compatibility is maintained with the SH-2 core.)
The SH-2A CPU core is designed to attain an improved real-time capability. It incorporates 15 register banks specifically for interrupt use. The response time for handling an interrupt is only 6 cycles, compared to 37 cycles for the SH-2 core. This enhancement, coupled with the SH-2A's 160MHz operating frequency, cuts the program interrupt response time to approximately 1/12 of that of an SH-2 core operating at 80MHz. This ensures fast program switching when an interrupt event occurs, for much better real-time control.
The SuperH device provides a rich selection of peripheral functions, making it possible to implement functionally advanced systems while reducing the number of external parts and making end products smaller and lower in cost. Specifically, the MCU offers two multifunction timer units (MTU2 and MTU2S) with 3-phase pulse width modulation (PWM) output capability for controlling AC servos or two motors simultaneously, as well as an 8-channel 12-bit A/D converter and a 2-channel 8-bit D/A converter that are useful for many industrial applications. The device also has a variety of communication functions, including a 4-channel serial communication interface with 16-stage FIFO and an I2C bus interface. A bus state controller enables flash ROM, SRAM, SDRAM, burst ROM, multiplex I/O, and others to connect directly to the MCU's external data bus.
System development tools
To aid system development, the SH7211F has on-chip debugging functions that enable real-time debugging at the maximum operating frequency. Supported Renesas development environments are the USB bus-powered E10A-USB emulator, which doesn't require an external power supply, and the more capable E200F emulator, which allows real-time tracing to be carried out at the MCU's maximum operating frequency. Renesas also offers the High-performance Embedded Workshop, an integrated development environment with C/C++ compiler, editor, and other functions. Additional software and hardware tools and services are available from the many independent vendors that support the devices in the SuperH series.
Renesas Technology will continue to extend the SuperH MCU product line to meet evolving market needs. In planning are faster and more powerful models featuring higher operating frequencies, increased on-chip flash memory and RAM capacities, and enhanced peripheral functions. SoC (System on Chip) and SiP (System in Package) products using the SH-2A CPU core are also planned.
Pricing and Availability
Sample
Product Name Package Price/Availability
------------------ ----------------------------- ---------------------
SH7211F (part # 144-pin LQFP (20mm x 20mm) $19.84/available now
R5F72115)
------------------ ----------------------------- ---------------------
Reader contact
Readers can find additional product and contact information on the Renesas Technology Web site at www.renesas.com.
About Renesas Technology Corp.
Renesas Technology Corp. is one of the world's leading semiconductor system solutions providers for mobile, automotive and PC/AV (Audio Visual) markets and the world's No.1 supplier of microcontrollers. It is also a leading provider of LCD Driver ICs, Smart Card microcontrollers, RF-ICs, High Power Amplifiers, Mixed Signal ICs, System-on-Chip (SoC), System-in-Package (SiP) and more. Established in 2003 as a joint venture between Hitachi, Ltd. (TOKYO:6501)(NYSE: HIT) and Mitsubishi Electric Corporation (TOKYO:6503), Renesas Technology achieved consolidated revenue of 1002.4 billion JPY in FY2004 (end of March 2005). Renesas Technology is based in Tokyo, Japan and has a global network of manufacturing, design and sales operations in around 20 countries with about 26,000 employees worldwide. For further information, please visit http://www.renesas.com
Note to Editors: A specification summary is included in this release, and a photo and block diagram of the SH7211F microcontroller are available.
SuperH is a trademark of Renesas Technology Corp. Other product names, company names, or brands mentioned are the property of their respective owners.
Specifications: Renesas Technology SH7211F Microcontroller
---------------------------- -----------------------------------------
Item SH7211F
---------------------------- -----------------------------------------
Product name R5F72115
---------------------------- -----------------------------------------
Power supply voltage 1.5V (internal)/3.3V (external)
---------------------------- -----------------------------------------
Maximum operating frequency 160MHz
---------------------------- -----------------------------------------
Maximum processing 320 MIPS (at 160MHz operation)
performance
---------------------------- -----------------------------------------
CPU core SH-2A (without FPU)
---------------------------- -----------------------------------------
CPU instructions 91 (FPU-related instructions are not
included)
---------------------------- -----------------------------------------
On-chip RAM 32Kbytes
---------------------------- -----------------------------------------
External memory Bus clock frequency: Maximum 40MHz
-----------------------------------------
SRAM, SDRAM, and burst ROM,
directly connectable by bus state
controller (BSC)
-----------------------------------------
Address space: 64Mbytes x 8
-----------------------------------------
Provision for idle-cycle insertion to
prevent bus collisions
-----------------------------------------
Data bus width: External 8/16 bits
---------------------------- -----------------------------------------
On-chip peripheral functions Multifunction timer pulse unit 2 (MTU2)
Multifunction timer pulse unit 2S (MTU2S)
-----------------------------------------
A/D converter (12-bit resolution) x 8
channels
-----------------------------------------
D/A converter (8-bit resolution) x 2
channels
-----------------------------------------
Serial communication interface with FIFO
(SCIF) x 4 channels (asynchronous and
clock synchronous serial communication
capability)
-----------------------------------------
I2C bus interface(a) x 1 channel
-----------------------------------------
Compare-match timer (CMT) x 2 channels
-----------------------------------------
User break controller (UBC)
-----------------------------------------
On-chip debugging functions
-- Advanced user debugger (AUD)
-- User debug interface (H-UDI)
-----------------------------------------
Direct memory access controller (DMAC) x
8 channels
-----------------------------------------
Interrupt controller (INTC)
-----------------------------------------
Watchdog timer (WDT)
-----------------------------------------
Clock pulse generator (CPG) with built-in
multiplication PLL
---------------------------- -----------------------------------------
Power-down modes Sleep, Software standby, and Module
standby
---------------------------- -----------------------------------------
Package 144-pin LQFP (20mm x 20mm)
---------------------------- -----------------------------------------
(a) I2C-bus (Inter IC Bus) is an interface specification proposed by
Royal Philips Electronics of the Netherlands.
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